DC Bias in Plasma Process
    1.
    发明申请

    公开(公告)号:US20190267211A1

    公开(公告)日:2019-08-29

    申请号:US16177530

    申请日:2018-11-01

    IPC分类号: H01J37/32 H01L21/02

    摘要: Embodiments described herein relate to plasma processes. A tool includes a pedestal. The pedestal is configured to support a semiconductor substrate. The tool includes a bias source. The bias source is electrically coupled to the pedestal. The bias source is operable to bias the pedestal with a direct current (DC) voltage. The tool includes a plasma generator. The plasma generator is operable to generate a plasma remote from the pedestal. A method for semiconductor processing includes performing a plasma process on a substrate in a tool. The plasma process includes flowing a gas into the tool. The plasma process includes biasing a pedestal that supports the substrate in the tool. The plasma process includes igniting a plasma in the tool using the gas.

    Method of forming a semiconductor device

    公开(公告)号:US11322393B2

    公开(公告)日:2022-05-03

    申请号:US17120989

    申请日:2020-12-14

    摘要: A method includes depositing a second dielectric layer over a first dielectric layer, depositing a third dielectric layer over the second dielectric layer, patterning a plurality of first openings in the third dielectric layer, etching the second dielectric layer through the first openings to form second openings in the second dielectric layer, performing a plasma etching process directed at the second dielectric layer from a first direction, the plasma etching process extending the second openings in the first direction, and etching the first dielectric layer through the second openings to form third openings in the first dielectric layer.

    Method of Forming a Semiconductor Device

    公开(公告)号:US20210134657A1

    公开(公告)日:2021-05-06

    申请号:US17120989

    申请日:2020-12-14

    摘要: A method includes depositing a second dielectric layer over a first dielectric layer, depositing a third dielectric layer over the second dielectric layer, patterning a plurality of first openings in the third dielectric layer, etching the second dielectric layer through the first openings to form second openings in the second dielectric layer, performing a plasma etching process directed at the second dielectric layer from a first direction, the plasma etching process extending the second openings in the first direction, and etching the first dielectric layer through the second openings to form third openings in the first dielectric layer.